Goodnight, Sugar Babe: The Killing of Vera Jo Reigle (2013)

The discovery of the mutilated body of a mentally challenged young mother begins a journey into madness that is so unbelievable the mastermind behind the crime ultimately got away with murder. Revealing for the first time how and why it happened filmmaker J. David Miles ventures into the insane mind of a small town crime family's matriarch and uncovers a conspiracy that continues to elude law enforcement to this very day. By going straight to the murderers themselves for interviews it is a true crime investigation like you have never seen, unveiling an alternate motive to what was presented in the courtroom that is as bizarre as it is heartbreaking.

Source: TMDb